package operation;

import book.Book;
import book.BookList;

import java.util.Scanner;

/**
 * @ClassDescription:
 * @JdkVersion: 1.8
 * @Author: 李白
 * @Created: 2024/8/19 21:18
 */
public class DelOperation implements IOPreparation{
    public void work(BookList bookList){
        System.out.println("请输入你要删除的书名");
        Scanner scanner = new Scanner(System.in);
        String name = scanner.nextLine();
        int currentSize = bookList.getSize();
        int pos = -1;
        int i = 0;
        for (; i < currentSize; i++) {
            Book book = bookList.getBook(i);
            if (book.getName().equals(name)) {
                pos = i;
                break;
            }
        }
        if (i == bookList.getSize()){
            System.out.println("没有找到这本书");
            return;
        }
        for (int j = pos; j < currentSize-1; j++) {
            Book book = bookList.getBook(j+1);
            bookList.setBook(j,book);
        }
        bookList.setBook(currentSize-1,null);
        bookList.setUsedSize(currentSize-1);
        System.out.println("已经删除这本书");
    }
}
